Is My Sensor Bad?

Hey Guys,

Just purchased my first URSA Mini 4.6K used, and I'm looking at the shadows, and they are just awful. Now I'm not saying they are awful when I shoot 1600 ISO inside during the night time. Awful is I'm outside on an extremely bright day without a cloud in the sky shooting at 400 ISO, 180 degree shutter, 1.8 Aperture (ND filter) , 2K 120fps PRORES 444 awful. Not only is there noise, but there are strange lines in these noisy images. I will upload a JPEG below. I have seen a few posts with people saying it is my software or output settings, which could be possible, because depending on where I open the image at, the lines disappear (However the awful noise is still there) . I see these "lines" and "poor noise" on my monitor when I'm shooting. So I'm curious to fix the problem here. Could it be my sensor? Could it be a setting? Yes, my WB was way off on the shot, I'm sorry. Thanks so much!

Austin

Image 2

I see no excessive noise (I am NOT a cinematographer so my opinion may be non-professional) but the green area at right side of the first image looks posterized. Not many bits of color depth???

Are your posted pics from the actual frame or represent a small area blown up? Post a link (such as Dropbox) to some individual DNG frames.


Sent from my iPhone using Tapatalk

You're probably seeing the dreaded "cross hatching" problem:

Cropped and scaled shadow area examples

Noise-7-crops.jpg (135.24 KiB) Viewed 1022 times

There's a big thread about it called "Cross Hatching Wont Go Away"
https://forum.blackmagicdesign.com/viewtopic.php?f=2&t=51936

Blackmagic isn't really interested in fixing the underlying problem, so you'll need to read that thread for some workarounds.

Oh, and for the record, your sensor looks normal for a properly functioning Blackmagic product. This is the image they produce; whether it's what you want or were expecting is up to you.